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SR1530 active speaker modification
Models affected:
All SR1530 active speakers before serial number: EA 14008
Add this as part of your normal repair procedures.
Symptom:
Lack of midrange frequencies, or intermittent midrange
Possible Cause:
Poor connection of the midrange wires to the midrange transducer.
Solution:
Improve the connections to the midrange transducer.
Safety Warning:
Caution! These instructions are for use by qualified personnel only. To avoid electric shock, do not
perform any servicing unless you are qualified to do so. Refer all service to qualified personnel.
Tools Required:
Phillips screwdriver, electrical cutters, safety glasses.
Procedure:
1.
Remove all cords (including the power cable and input cable) from the speaker.
2.
Lay the speaker on its back on a soft carpet or surface.
3.
Take off the front grill, taking care to undo the LED wire connector. Undo the 14 screws and
washers holding the midrange/tweeter assembly to the front of the cabinet.
4.
Lift up the midrange/tweeter assembly and remove the wires from the transducers. Make sure the
gasket does not get torn. Place the assembly face down on a soft surface.
5.
Bend the tabs on the midrange terminal strip, so they are pointing approximately 45 degrees
the terminal board. See diagram 5 below.
6.
Remove the plastic housing around the end of each of the midrange wires, see diagram 6.
7.
Refit the black and the green wires onto the midrange terminals and make sure they are tight
and fully inserted. The negative terminal is smaller than the positive. Fit the tweeter wires securely.
8.
Check that the gasket is in the correct position, then reassemble the speaker. Check the front
grill gaskets (top and bottom) are in the correct position and the LED wires are reconnected.
9.
Perform a complete specification and safety test.
Terminal board of the
midrange transducer
5
6
x2
SR1530 modification SSE August 2000
Midrange/tweeter
assembly
7
Green (+)
Fully
insert
Black (-)
SR1530 mod.pdf, page 1 of 1
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